Slot-guard for paper-trimming machines.



V M. REPP. SLOT GUARD FOR PAPER TRIMMING MACHINES.

APPLICATION FILED JAN. 3, 1910.

Patented Sept; 27, 1910.

29M644 mo a0 UNITED STAJIFS PATIENT @FFIQE.

MARION EEPP, OF OTSEGO, llLIIGIrTjIGJllI.

SLOT-GUARD FUR PAPER-TRIIVIIVIING- MACEINES.

Application filed January 3, 1910.

To all whom it may concern:

Be it known that I, IVIARION Rnrr, a citizen of the United States,residing at- (ltsego, in the county of Allegan and State of Michigan,have invented certain new'and useful. Improvements in Slot-Guards forPaper- Trimming Machines; and I do declare the following to be a full,clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame.

This invention relates to improvements in slot guards for paper trimmingmachines.

One object of the invention is to provide a device of this character bymeans of which the slot in the table of the machine in which closed orcovered on both sides of the plate in whatever position the same isadjusted to on the table.

Another object is to provide a guard of this character which in coveringthe slot in the table will be flush with the upper edges of the slot,thereby providing a perfectly smooth upper surface for the table.

With the foregoing and other objects in View, the invention consists ofcertain novel features of construction, combination and arrangement ofparts as will be more fully described and particularly pointed out inthe appended claims.

In the accompanying drawings, Figure 1 is a plan view of the table of apaper trim ming machine showing my invention applied thereto; Fig. 2 isa vertical longitudinal section of the same; Fig. 3 is a cross sectionalview on the line 3 3 of Fig. 1.

Referring more particularly to the drawings, 1 denotes the table orpaper supporting bed of a paper trimming machine. At the front edge ofthe table is arranged the stationary blade or knife 2. In the table isarranged the guide slot 3, in which the follower or stop plate loperates, said plate having secured to its lower edge a guide block 5,to the lower edge of which is secured a retaining plate 6, the edges ofwhich engage the lower side of the table adjacent to each side of theslot thereby slidingly securing the follower or stop plate to the table.These parts may be of the usual or any suitable construction and do notform a part of my present invention.

Itevolubly mounted in suitable bearing brackets secured to the underside of the Specification of Letters Patent.

Patented Sept. 27, 1910?.

Serial No. 535 $26.

table adjacent to the forward end of the slot 3 is a guide roller 7while at the opposite end of the slot is revolubly mounted in suitablebearing brackets 8 a guide roller 9. Around the rollers 8 and 9 ispassed a flexible slot closing strap or band 10 which is preferablyformed of a strap of steel or other suitable metal. One end of the strap10 is secured to the guide block 5 adjacent to the forward side of thefollower plate, while the opposite end of the band is secured to theguide block adjacent to the opposite side of the follower plate, asclearly shown in Fig. 2 of the drawings.

In the opposite sides of the slot 3 adjacent to the upper surface of thetable are formed longitudinal grooves or rabbets 11, the depth of whichis substantially the same as the thickness of the band, whereby when thelatter is drawn over the slot by the movement of the follower plate 4,the upper side of the band will be flush with the upper edges of thegrooves, thus providing a smooth unobstructed surface for the table.

By arranging the band 10 and securing the ends of the same to theopposite ends of the guide block, said band will cover the slot on bothsides of the follower plate in whatever position the latter may be. Bythus covering the slot in the table, the paper arranged thereon fortrimming will be prevented from catching into the slot and obj ects willbe prevented from falling through the slot and thus interfering with theoperation of the machine.

From the foregoing description taken in connection with the accompanyingdrawings, the construction and operation of the invention will bereadily understood without requiring a more extended explanation.

Various changes in the form, proportion and the minor details ofconstruction may be resorted to without departing from the principle orsacrificing any of the advantages of this invention as defined in the appended claims.

Having thus described my invention, What I claim is 1. In a papertrimming machine, a table having formed therein a guide slot, a followeror stop plate slidably mounted on said table and in said slot, and meansto close the slot.

2. In a paper trimming machine, a table having formed therein alongitudinal guide slot, a follower or stop plate slidably mounted onsaid table and in said slot, a slot closing strap secured to and adaptedto be operated by said stop plate, and means to support said strap inoperative position.

3. In a paper trimming machine, a table having a guide slot therein, afollower slidably mounted on said table and in said slot, and meansoperable by said follower to keep said slot continuously closed duringthe back and forward movement of said follower.

4. In a paper trimming machine, a table having a longitudinal guide slottherein, a follower slidably mounted on said table and in said slot, aslot closing strap secured to and adapted to be operated by saidfollower for keeping said slot closed during the movement of saidfollower.

5. In a paper trimming machine, a table ed to support said strap inoperative position in said slot.

6. In a paper trimming machine, a table having formed therein a guideslot, said slot having formed in its opposite sides adjacent to itsupper edges guide grooves or rabbets, a follower plate slidably mountedin said slot, a slot closing strap secured at its opposite ends to saidfollower plate and having a sliding engagement with the grooves orrabbets in said slot, and revolubly mounted rollers arranged at theopposite ends of said slot and adapted to support said strap in anoperative position, whereby the same is moved back and forth through theslot to close the same on opposite sides of said plate.

In testimony whereof I have hereunto set my hand in presence of twosubscribing witmesses.

MARION REPP. \Vitnesses v EDWARD ScnoPP, JOHN H. IVEBER.

